I agree with Rick, and I would add, the look a bit underexposed to me (4 and 5 specifically). I would also bump the contrast a bit in 2, 3, 6 and 7. I assume you were shooting through the glass and not an opening in the glass. Remember, that shooting through the glass is like adding another filter, and with marks on glass, or just the glass itself can be up to a stop difference in the exposure, and shooting through the glass typically washes out images a tad, requiring contrast adjustments (set black and white points in curves in Photoshop or adjust black and white levels in Lightroom and bring some detail back with shadow and highlights).

Other than that, over all, they are nice and tight, although, some seem a bit soft which could be a combination of focus, shutter speed or the glass again.